[BUGFIX] Remove import of `tabs` module in Content Element Wizard

This commit removes the import of `@typo3/backend/tabs.js` in the "New
Content Element" wizard for two reasons:

1. the module is not required in this scope
2. the import is apparently defunct, no request is made for that file

Resolves: #103684
Releases: main, 12.4
Change-Id: I1f9af422f6c2b14590b96a058bc2ed088d0853d0
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/83896


Reviewed-by: Andreas Kienast <a.fernandez@scripting-base.de>
Tested-by: core-ci <typo3@b13.com>
Tested-by: Andreas Kienast <a.fernandez@scripting-base.de>